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⬆️ rustc_lexer

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This commit is contained in:
Aleksey Kladov 2019-08-20 19:16:57 +03:00
parent bbeb07e5ca
commit deba1fedfa
4 changed files with 78 additions and 120 deletions
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6
Cargo.lock generated
View file

@ -1256,7 +1256,7 @@ dependencies = [
[[package]] [[package]]
name = "ra_rustc_lexer" name = "ra_rustc_lexer"
version = "0.1.0-pre.2" version = "0.1.0-pre.3"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [ dependencies = [
"unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)", "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@ -1268,7 +1268,7 @@ version = "0.1.0"
dependencies = [ dependencies = [
"itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)", "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
"ra_parser 0.1.0", "ra_parser 0.1.0",
"ra_rustc_lexer 0.1.0-pre.2 (registry+https://github.com/rust-lang/crates.io-index)", "ra_rustc_lexer 0.1.0-pre.3 (registry+https://github.com/rust-lang/crates.io-index)",
"ra_text_edit 0.1.0", "ra_text_edit 0.1.0",
"rowan 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)", "rowan 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
"smol_str 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)", "smol_str 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
@ -2134,7 +2134,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0" "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
"checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1" "checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
"checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe" "checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
"checksum ra_rustc_lexer 0.1.0-pre.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6baccda91574dfadd7f8a0bc8f9f110f874b6b484289b2536d3dbf4f0d5d97bb" "checksum ra_rustc_lexer 0.1.0-pre.3 (registry+https://github.com/rust-lang/crates.io-index)" = "04371af481820ff8d35c7d12b503eb09cf9e1bd246269bf4a33e3d8c54fa3a4a"
"checksum ra_vfs 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "6918c38f6ab45101f1ddd6110eda831a735b5e9ca6c96d1ceedb7d13ecaeb0f4" "checksum ra_vfs 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "6918c38f6ab45101f1ddd6110eda831a735b5e9ca6c96d1ceedb7d13ecaeb0f4"
"checksum rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca" "checksum rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
"checksum rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d47eab0e83d9693d40f825f86948aa16eff6750ead4bdffc4ab95b8b3a7f052c" "checksum rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d47eab0e83d9693d40f825f86948aa16eff6750ead4bdffc4ab95b8b3a7f052c"

2
crates/ra_syntax/Cargo.toml
View file

@ -10,7 +10,7 @@ repository = "https://github.com/rust-analyzer/rust-analyzer"
[dependencies] [dependencies]
itertools = "0.8.0" itertools = "0.8.0"
rowan = "0.6.1" rowan = "0.6.1"
ra_rustc_lexer = { version = "0.1.0-pre.2" } ra_rustc_lexer = { version = "0.1.0-pre.3", features = ["unicode-xid"] }
# ideally, `serde` should be enabled by `ra_lsp_server`, but we enable it here # ideally, `serde` should be enabled by `ra_lsp_server`, but we enable it here
# to reduce number of compilations # to reduce number of compilations

136
crates/ra_syntax/src/parsing/lexer.rs
View file

@ -12,16 +12,16 @@ pub struct Token {
pub len: TextUnit, pub len: TextUnit,
} }
fn match_literal_kind(kind: ra_rustc_lexer::LiteralKind) -> SyntaxKind { fn match_literal_kind(kind: rustc_lexer::LiteralKind) -> SyntaxKind {
match kind { match kind {
ra_rustc_lexer::LiteralKind::Int { .. } => INT_NUMBER, rustc_lexer::LiteralKind::Int { .. } => INT_NUMBER,
ra_rustc_lexer::LiteralKind::Float { .. } => FLOAT_NUMBER, rustc_lexer::LiteralKind::Float { .. } => FLOAT_NUMBER,
ra_rustc_lexer::LiteralKind::Char { .. } => CHAR, rustc_lexer::LiteralKind::Char { .. } => CHAR,
ra_rustc_lexer::LiteralKind::Byte { .. } => BYTE, rustc_lexer::LiteralKind::Byte { .. } => BYTE,
ra_rustc_lexer::LiteralKind::Str { .. } => STRING, rustc_lexer::LiteralKind::Str { .. } => STRING,
ra_rustc_lexer::LiteralKind::ByteStr { .. } => BYTE_STRING, rustc_lexer::LiteralKind::ByteStr { .. } => BYTE_STRING,
ra_rustc_lexer::LiteralKind::RawStr { .. } => RAW_STRING, rustc_lexer::LiteralKind::RawStr { .. } => RAW_STRING,
ra_rustc_lexer::LiteralKind::RawByteStr { .. } => RAW_BYTE_STRING, rustc_lexer::LiteralKind::RawByteStr { .. } => RAW_BYTE_STRING,
} }
} }
@ -32,32 +32,17 @@ pub fn tokenize(text: &str) -> Vec<Token> {
} }
let mut text = text; let mut text = text;
let mut acc = Vec::new(); let mut acc = Vec::new();
if let Some(len) = ra_rustc_lexer::strip_shebang(text) { if let Some(len) = rustc_lexer::strip_shebang(text) {
acc.push(Token { kind: SHEBANG, len: TextUnit::from_usize(len) }); acc.push(Token { kind: SHEBANG, len: TextUnit::from_usize(len) });
text = &text[len..]; text = &text[len..];
} }
while !text.is_empty() { while !text.is_empty() {
let rustc_token = ra_rustc_lexer::first_token(text); let rustc_token = rustc_lexer::first_token(text);
macro_rules! decompose {
($t1:expr, $t2:expr) => {{
acc.push(Token { kind: $t1, len: 1.into() });
acc.push(Token { kind: $t2, len: 1.into() });
text = &text[2..];
continue;
}};
($t1:expr, $t2:expr, $t3:expr) => {{
acc.push(Token { kind: $t1, len: 1.into() });
acc.push(Token { kind: $t2, len: 1.into() });
acc.push(Token { kind: $t3, len: 1.into() });
text = &text[3..];
continue;
}};
}
let kind = match rustc_token.kind { let kind = match rustc_token.kind {
ra_rustc_lexer::TokenKind::LineComment => COMMENT, rustc_lexer::TokenKind::LineComment => COMMENT,
ra_rustc_lexer::TokenKind::BlockComment { .. } => COMMENT, rustc_lexer::TokenKind::BlockComment { .. } => COMMENT,
ra_rustc_lexer::TokenKind::Whitespace => WHITESPACE, rustc_lexer::TokenKind::Whitespace => WHITESPACE,
ra_rustc_lexer::TokenKind::Ident => { rustc_lexer::TokenKind::Ident => {
let token_text = &text[..rustc_token.len]; let token_text = &text[..rustc_token.len];
if token_text == "_" { if token_text == "_" {
UNDERSCORE UNDERSCORE
@ -65,62 +50,37 @@ pub fn tokenize(text: &str) -> Vec<Token> {
SyntaxKind::from_keyword(&text[..rustc_token.len]).unwrap_or(IDENT) SyntaxKind::from_keyword(&text[..rustc_token.len]).unwrap_or(IDENT)
} }
} }
ra_rustc_lexer::TokenKind::RawIdent => IDENT, rustc_lexer::TokenKind::RawIdent => IDENT,
ra_rustc_lexer::TokenKind::Literal { kind, .. } => match_literal_kind(kind), rustc_lexer::TokenKind::Literal { kind, .. } => match_literal_kind(kind),
ra_rustc_lexer::TokenKind::Lifetime { .. } => LIFETIME, rustc_lexer::TokenKind::Lifetime { .. } => LIFETIME,
ra_rustc_lexer::TokenKind::Semi => SEMI, rustc_lexer::TokenKind::Semi => SEMI,
ra_rustc_lexer::TokenKind::Comma => COMMA, rustc_lexer::TokenKind::Comma => COMMA,
ra_rustc_lexer::TokenKind::DotDotDot => decompose!(DOT, DOT, DOT), rustc_lexer::TokenKind::Dot => DOT,
ra_rustc_lexer::TokenKind::DotDotEq => decompose!(DOT, DOT, EQ), rustc_lexer::TokenKind::OpenParen => L_PAREN,
ra_rustc_lexer::TokenKind::DotDot => decompose!(DOT, DOT), rustc_lexer::TokenKind::CloseParen => R_PAREN,
ra_rustc_lexer::TokenKind::Dot => DOT, rustc_lexer::TokenKind::OpenBrace => L_CURLY,
ra_rustc_lexer::TokenKind::OpenParen => L_PAREN, rustc_lexer::TokenKind::CloseBrace => R_CURLY,
ra_rustc_lexer::TokenKind::CloseParen => R_PAREN, rustc_lexer::TokenKind::OpenBracket => L_BRACK,
ra_rustc_lexer::TokenKind::OpenBrace => L_CURLY, rustc_lexer::TokenKind::CloseBracket => R_BRACK,
ra_rustc_lexer::TokenKind::CloseBrace => R_CURLY, rustc_lexer::TokenKind::At => AT,
ra_rustc_lexer::TokenKind::OpenBracket => L_BRACK, rustc_lexer::TokenKind::Pound => POUND,
ra_rustc_lexer::TokenKind::CloseBracket => R_BRACK, rustc_lexer::TokenKind::Tilde => TILDE,
ra_rustc_lexer::TokenKind::At => AT, rustc_lexer::TokenKind::Question => QUESTION,
ra_rustc_lexer::TokenKind::Pound => POUND, rustc_lexer::TokenKind::Colon => COLON,
ra_rustc_lexer::TokenKind::Tilde => TILDE, rustc_lexer::TokenKind::Dollar => DOLLAR,
ra_rustc_lexer::TokenKind::Question => QUESTION, rustc_lexer::TokenKind::Eq => EQ,
ra_rustc_lexer::TokenKind::ColonColon => decompose!(COLON, COLON), rustc_lexer::TokenKind::Not => EXCL,
ra_rustc_lexer::TokenKind::Colon => COLON, rustc_lexer::TokenKind::Lt => L_ANGLE,
ra_rustc_lexer::TokenKind::Dollar => DOLLAR, rustc_lexer::TokenKind::Gt => R_ANGLE,
ra_rustc_lexer::TokenKind::EqEq => decompose!(EQ, EQ), rustc_lexer::TokenKind::Minus => MINUS,
ra_rustc_lexer::TokenKind::Eq => EQ, rustc_lexer::TokenKind::And => AMP,
ra_rustc_lexer::TokenKind::FatArrow => decompose!(EQ, R_ANGLE), rustc_lexer::TokenKind::Or => PIPE,
ra_rustc_lexer::TokenKind::Ne => decompose!(EXCL, EQ), rustc_lexer::TokenKind::Plus => PLUS,
ra_rustc_lexer::TokenKind::Not => EXCL, rustc_lexer::TokenKind::Star => STAR,
ra_rustc_lexer::TokenKind::Le => decompose!(L_ANGLE, EQ), rustc_lexer::TokenKind::Slash => SLASH,
ra_rustc_lexer::TokenKind::LArrow => decompose!(COLON, MINUS), rustc_lexer::TokenKind::Caret => CARET,
ra_rustc_lexer::TokenKind::Lt => L_ANGLE, rustc_lexer::TokenKind::Percent => PERCENT,
ra_rustc_lexer::TokenKind::ShlEq => decompose!(L_ANGLE, L_ANGLE, EQ), rustc_lexer::TokenKind::Unknown => ERROR,
ra_rustc_lexer::TokenKind::Shl => decompose!(L_ANGLE, L_ANGLE),
ra_rustc_lexer::TokenKind::Ge => decompose!(R_ANGLE, EQ),
ra_rustc_lexer::TokenKind::Gt => R_ANGLE,
ra_rustc_lexer::TokenKind::ShrEq => decompose!(R_ANGLE, R_ANGLE, EQ),
ra_rustc_lexer::TokenKind::Shr => decompose!(R_ANGLE, R_ANGLE),
ra_rustc_lexer::TokenKind::RArrow => decompose!(MINUS, R_ANGLE),
ra_rustc_lexer::TokenKind::Minus => MINUS,
ra_rustc_lexer::TokenKind::MinusEq => decompose!(MINUS, EQ),
ra_rustc_lexer::TokenKind::And => AMP,
ra_rustc_lexer::TokenKind::AndAnd => decompose!(AMP, AMP),
ra_rustc_lexer::TokenKind::AndEq => decompose!(AMP, EQ),
ra_rustc_lexer::TokenKind::Or => PIPE,
ra_rustc_lexer::TokenKind::OrOr => decompose!(PIPE, PIPE),
ra_rustc_lexer::TokenKind::OrEq => decompose!(PIPE, EQ),
ra_rustc_lexer::TokenKind::PlusEq => decompose!(PLUS, EQ),
ra_rustc_lexer::TokenKind::Plus => PLUS,
ra_rustc_lexer::TokenKind::StarEq => decompose!(STAR, EQ),
ra_rustc_lexer::TokenKind::Star => STAR,
ra_rustc_lexer::TokenKind::SlashEq => decompose!(SLASH, EQ),
ra_rustc_lexer::TokenKind::Slash => SLASH,
ra_rustc_lexer::TokenKind::CaretEq => decompose!(CARET, EQ),
ra_rustc_lexer::TokenKind::Caret => CARET,
ra_rustc_lexer::TokenKind::PercentEq => decompose!(PERCENT, EQ),
ra_rustc_lexer::TokenKind::Percent => PERCENT,
ra_rustc_lexer::TokenKind::Unknown => ERROR,
}; };
let token = Token { kind, len: TextUnit::from_usize(rustc_token.len) }; let token = Token { kind, len: TextUnit::from_usize(rustc_token.len) };
acc.push(token); acc.push(token);
@ -130,12 +90,12 @@ pub fn tokenize(text: &str) -> Vec<Token> {
} }
pub fn classify_literal(text: &str) -> Option<Token> { pub fn classify_literal(text: &str) -> Option<Token> {
let t = ra_rustc_lexer::first_token(text); let t = rustc_lexer::first_token(text);
if t.len != text.len() { if t.len != text.len() {
return None; return None;
} }
let kind = match t.kind { let kind = match t.kind {
ra_rustc_lexer::TokenKind::Literal { kind, .. } => match_literal_kind(kind), rustc_lexer::TokenKind::Literal { kind, .. } => match_literal_kind(kind),
_ => return None, _ => return None,
}; };
Some(Token { kind, len: TextUnit::from_usize(t.len) }) Some(Token { kind, len: TextUnit::from_usize(t.len) })

54
crates/ra_syntax/src/validation.rs
View file

@ -1,6 +1,6 @@
mod block; mod block;
use ra_rustc_lexer::unescape; use rustc_lexer::unescape;
use crate::{ use crate::{
algo::visit::{visitor_ctx, VisitorCtx}, algo::visit::{visitor_ctx, VisitorCtx},
@ -32,64 +32,62 @@ pub enum EscapeError {
NonAsciiCharInByte, NonAsciiCharInByte,
} }
impl From<ra_rustc_lexer::unescape::EscapeError> for EscapeError { impl From<rustc_lexer::unescape::EscapeError> for EscapeError {
fn from(err: ra_rustc_lexer::unescape::EscapeError) -> Self { fn from(err: rustc_lexer::unescape::EscapeError) -> Self {
match err { match err {
ra_rustc_lexer::unescape::EscapeError::ZeroChars => EscapeError::ZeroChars, rustc_lexer::unescape::EscapeError::ZeroChars => EscapeError::ZeroChars,
ra_rustc_lexer::unescape::EscapeError::MoreThanOneChar => EscapeError::MoreThanOneChar, rustc_lexer::unescape::EscapeError::MoreThanOneChar => EscapeError::MoreThanOneChar,
ra_rustc_lexer::unescape::EscapeError::LoneSlash => EscapeError::LoneSlash, rustc_lexer::unescape::EscapeError::LoneSlash => EscapeError::LoneSlash,
ra_rustc_lexer::unescape::EscapeError::InvalidEscape => EscapeError::InvalidEscape, rustc_lexer::unescape::EscapeError::InvalidEscape => EscapeError::InvalidEscape,
ra_rustc_lexer::unescape::EscapeError::BareCarriageReturn rustc_lexer::unescape::EscapeError::BareCarriageReturn
| ra_rustc_lexer::unescape::EscapeError::BareCarriageReturnInRawString => { | rustc_lexer::unescape::EscapeError::BareCarriageReturnInRawString => {
EscapeError::BareCarriageReturn EscapeError::BareCarriageReturn
} }
ra_rustc_lexer::unescape::EscapeError::EscapeOnlyChar => EscapeError::EscapeOnlyChar, rustc_lexer::unescape::EscapeError::EscapeOnlyChar => EscapeError::EscapeOnlyChar,
ra_rustc_lexer::unescape::EscapeError::TooShortHexEscape => { rustc_lexer::unescape::EscapeError::TooShortHexEscape => EscapeError::TooShortHexEscape,
EscapeError::TooShortHexEscape rustc_lexer::unescape::EscapeError::InvalidCharInHexEscape => {
}
ra_rustc_lexer::unescape::EscapeError::InvalidCharInHexEscape => {
EscapeError::InvalidCharInHexEscape EscapeError::InvalidCharInHexEscape
} }
ra_rustc_lexer::unescape::EscapeError::OutOfRangeHexEscape => { rustc_lexer::unescape::EscapeError::OutOfRangeHexEscape => {
EscapeError::OutOfRangeHexEscape EscapeError::OutOfRangeHexEscape
} }
ra_rustc_lexer::unescape::EscapeError::NoBraceInUnicodeEscape => { rustc_lexer::unescape::EscapeError::NoBraceInUnicodeEscape => {
EscapeError::NoBraceInUnicodeEscape EscapeError::NoBraceInUnicodeEscape
} }
ra_rustc_lexer::unescape::EscapeError::InvalidCharInUnicodeEscape => { rustc_lexer::unescape::EscapeError::InvalidCharInUnicodeEscape => {
EscapeError::InvalidCharInUnicodeEscape EscapeError::InvalidCharInUnicodeEscape
} }
ra_rustc_lexer::unescape::EscapeError::EmptyUnicodeEscape => { rustc_lexer::unescape::EscapeError::EmptyUnicodeEscape => {
EscapeError::EmptyUnicodeEscape EscapeError::EmptyUnicodeEscape
} }
ra_rustc_lexer::unescape::EscapeError::UnclosedUnicodeEscape => { rustc_lexer::unescape::EscapeError::UnclosedUnicodeEscape => {
EscapeError::UnclosedUnicodeEscape EscapeError::UnclosedUnicodeEscape
} }
ra_rustc_lexer::unescape::EscapeError::LeadingUnderscoreUnicodeEscape => { rustc_lexer::unescape::EscapeError::LeadingUnderscoreUnicodeEscape => {
EscapeError::LeadingUnderscoreUnicodeEscape EscapeError::LeadingUnderscoreUnicodeEscape
} }
ra_rustc_lexer::unescape::EscapeError::OverlongUnicodeEscape => { rustc_lexer::unescape::EscapeError::OverlongUnicodeEscape => {
EscapeError::OverlongUnicodeEscape EscapeError::OverlongUnicodeEscape
} }
ra_rustc_lexer::unescape::EscapeError::LoneSurrogateUnicodeEscape => { rustc_lexer::unescape::EscapeError::LoneSurrogateUnicodeEscape => {
EscapeError::LoneSurrogateUnicodeEscape EscapeError::LoneSurrogateUnicodeEscape
} }
ra_rustc_lexer::unescape::EscapeError::OutOfRangeUnicodeEscape => { rustc_lexer::unescape::EscapeError::OutOfRangeUnicodeEscape => {
EscapeError::OutOfRangeUnicodeEscape EscapeError::OutOfRangeUnicodeEscape
} }
ra_rustc_lexer::unescape::EscapeError::UnicodeEscapeInByte => { rustc_lexer::unescape::EscapeError::UnicodeEscapeInByte => {
EscapeError::UnicodeEscapeInByte EscapeError::UnicodeEscapeInByte
} }
ra_rustc_lexer::unescape::EscapeError::NonAsciiCharInByte rustc_lexer::unescape::EscapeError::NonAsciiCharInByte
| ra_rustc_lexer::unescape::EscapeError::NonAsciiCharInByteString => { | rustc_lexer::unescape::EscapeError::NonAsciiCharInByteString => {
EscapeError::NonAsciiCharInByte EscapeError::NonAsciiCharInByte
} }
} }
} }
} }
impl From<ra_rustc_lexer::unescape::EscapeError> for SyntaxErrorKind { impl From<rustc_lexer::unescape::EscapeError> for SyntaxErrorKind {
fn from(err: ra_rustc_lexer::unescape::EscapeError) -> Self { fn from(err: rustc_lexer::unescape::EscapeError) -> Self {
SyntaxErrorKind::EscapeError(err.into()) SyntaxErrorKind::EscapeError(err.into())
} }
} }